This book constitutes the refereed proceedings of the Joint 22nd International Workshop on Formal Methods for Industrial Critical Systems and the 17th International Workshop on Automated Verification of Critical Systems, FMICS-AVoCS 2017, held in Turin, Italy, in September 2017. The 14 full papers presented together with one invited talk were carefully reviewed and selected from 30 submissions. They are organized in the following sections: Automated verification techniques; Testing and scheduling; Formal Methods for mobile and autonomous robots; and Modeling and analysis techniques.